Key locking lock



May 16, 1933. N, J. SAAD 1,909,427

KEY LOCKING LOCK Filed May 24, 1932 Patented May 16, 1933 UNITED STATES'NAJEEIB J'. SAAD, F SPOKANE, WASHINGTON KEY LOCKING LOCK Applicationfiled. May 24,

,My invention relates to key locking locks and certain objects oftheinvention. are to provide a lock having means whereby a key that isused to lock and unlock doors of lockers, closets and the like is caughtand retained in the lock when a door is unlocked and 1s thus preventedfrom being removed or wlthdrawn from the lock except by means of asecond key which may be in the custody of an official or otherauthorized person. The device is particularly adapted for use inchecking rooms and the like and by its use keys may be safely left inthe locks of doors while they are unlocked thus obviating the necessityof turning the keys over to an official each time the lockers are used,or eliminating the necessity of carrying the keys around and theconsequent danger of losing the keys.

With the above and other objects in view which will appear as thedescription proceeds, the invention consists of the novel construction,adaptation, combination and arrangement of parts hereinafter describedand claimed. These objects are accomplished by the devices illustratedin the accompanying drawing; wherein: Figure 1 is a view in per--spective showing a lock with its casing cover removed and embodying thefeatures of the invention; Fig. 2 is a view in vertical sec-- tion takensubstantially on a broken line 2-2 of Fig. 1; Fig. 3 is a fragmentarydetail view in elevation showing a key in its movement ast the keylocking means when a door is locked by the main locking bolt; and Fig. 4i is a corresponding view showing the key locked by the key lockingmeans when a door is unlocked.

Referring to the drawing throughout which like reference numeralsindicate like 9 parts, the numeral 5 designates a lock casing having acover member 6 secured thereto and and a locking bolt 7 and slidinglevers 8 mounted therein with the usual actuating springs 9. A key 10 isadapted to be inserted into a keyhole 11 and used for locking andunlocking the look when the key is turned to the left or right toslidably move the levers and the bolt in the usual manner. The foregoingelements form no part of my invention but necessarily enter intocombination there- 1932. Serial N0. 613,173.

with. It will however be understood that said elements may be of anyform, arrangement and combination that will function in the operation ofmy inventionwhich will now be'described. Essentially my inventioncomprises a lever member 12 with a cylinder 13 fixed to its loW- er endandpivoted within the lower portion of the casing'5'4; Said cylinder isprovided wlth -a keyrecess 14 that is adapted to receive a second key15, as shown in Fig. 2, when same is passed into a hole 16 through thecasing. A-leaf spring 1 7,fixedto said cylinder and bearing against aside of the casing, is adapted to normally retain said lever member inavertical position against a stop pin 18 fixed to the casing. A jaw 19is: fixed to the upper end portion of the lever 12 and a correspondingjaw 20 is pivoted at 21 to said lever a short distance below the fixedjaw. The outer ends of said aws project in a direction toward thekeyholell and areoppositely bev'eled, or in other words the fixed jaw 19has its end beveled downwardly and outwardly while the pivoted jaw 20has its end beveled upwardly and outwardly. The pivoted jaw maybeslightly longer than the fixed aw if desired, anda small leaf spring. 22normally retains Y the pivoted jaw in parallel spaced relation with thefixed jaw and against a stoppin 23 fixed tothe lever member. 9 V

lVhen locking a door to which thedevice is fixedthe key'lO is turned tothe left, or counter clockwise, in the regular manner as indi catedbythe direction arrow in Fig. 3. In its turning movement to the left saidkey engages the outer beveled end of the pivoted jaw 20 pivotallyraising said jaw, overcomin the tension of the small leaf spring 22 andforcing said pivotedv jaw against the fixed jaw 19 whereby the key isprevented from being caught between said two jaws as will be understood.In its continued movement to the left and in engagement with the outerbeveled end of the pivoted jaw 20, the lever member 12 is pivota11y mved' backagainst the tension of the leaf spring 17'and when the keypasses said lever member the leaf'springs 17 r and 22 will return saidlever member and its pivoted jaw 20 to their respective normalpositions. The key then passes on tothe left engaging the sliding levers8 and thus causing the bolt 7 to move to the outward or locked position.

Referring now to Fig. 4:, in unlocking the door to which the device issecured, the key is turned to the right, or clockwise, in the regularmanner as indicated by the direction arrow. Assuming that the key hasalready moved the bolt 7 inwardly whereby the door is unlocked, said keywill then, in its continued movement to the right, engage the beveledend of the fixed jaws l9 and thus pivotally move the lever member 12back to the dotted position against the spring 17. Then in its continuedmovement to the right the key will be lodged or caught by the outerprojecting end of the pivoted jaw and the spring 17 will forthwith movethe lever member 12 back to its vertically normal position thus catchingand locking the key between the jaws 19 and 20. Now in order to removethe key 10 from the lock it is necessary to again move the lever member12 to the right to release the key from the jaws and this is done byinserting the second key 15 into the recess 14: of the cylinder 13. Thesecond key may be in the custody of a check room ofiicial or otherauthorized person and it will now be apparent that, by means of mydevice, keys may be safely left in thelocks of closet or locker doorswhen the doors are left in the open or unlocked position.

Having thus described my invention, it being understood that minorchanges in its construction and arrangement may be resorted to withoutdeparting from the scope and spirit of the invention, what I claim anddesire to secure by Letters Patent of the United States is 1. Thecombination with a lock comprising a bolt operable by a key for slidablymoving the bolt to the locked and unlocked positions,

of key locking means comprlsing a lever member pivotally mounted withinthe lock and having a recess adapted to receive a second key, a beveledjaw fixed to the free end of the lever member, a spring actuated jawpivotally connected to the lever in normally spaced apart relation withthe fixed jaw, a spring arranged to normally retain the lever in aposition whereby its jaws are engageable by the first key and wherebysaid lever and jaws are moved out of the way when the first key isturned to lock the bolt, and said jaws adapted to catch and retain thefirst key after it is turned to unlock the bolt and whereby it isnecessary to move said lever by means of a second key inserted in itsrecess in order to release the first key.

2. In a key locking lock comprising a bolt operable by a key forslidably moving the bolt to the locked and unlocked positions, thecombination of key locking means comprising a lever member having acylinder fixed to one end and a beveled jaw fixed to its other end, saidcylinder pivoted within the lock and having a recess adapted to receivea second key, another beveled jaw pivoted to the lever, a spring withmeans for retaining the pivoted jaw normally in parallel spaced apartrelation from the fixed jaw, another spring arranged to normally retainthe lever with its jaws in engageable relation with the first key andwhereby said jaws arem-oved out of the way by the first key when it isturned to lock the bolt, and said jaws adapted to catch and retain thefirst key after it is turned to unlock the bolt and whereby it isnecessary to move said lever member by means ot a second key inserted inthe recess of its cylinder in order to release the first key.

In testimony whereof I aifix my signature.

' NAJEEB J. 'SAAD.

iio

